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Google, the search engine and advertising company, has acquired Boston Dynamics — the robotics and engineering company famous for the creation of some of the world’s most advanced robots, including BigDog, Cheetah, Petman, and Atlas. This brings Google’s total number of robot-related acquisitions to eight, and the company now has teams of robotics experts in California and Japan. As we’ve ...

Lai Seng Sin/AP Timothy Henrich of the Harvard-affiliated Brigham and Women’s Hospital in Boston announced that HIV has returned in two patients researchers hoped were permanently cleared of the virus. The two men had received bone marrow transplants to treat blood cancer, which also seemed to wipe HIV from their systems. Two men whom Boston researchers reported in July had ...